Abbiokob to the liquid cabbonic cob



March 22, 1932. F. HUNT 1,850,303

ACCELERATOR FOR REFRIGERATION UNITS OF SODA FOUNTAINS Filed March 21,1929' s Sheets-Sheet 1 I Jwumtoc G Frank/1h Hunt -March 22, 1932. v HUNT1,850,303

ACCELERATOR FOR REFRIGERATION UNITS OF SODA FOUNTAINS Filed March 21,1929 s Sheets-Sheet 2 gwucntoi mm Hm,

attomvd,

March 22, 1932. F. HUNT 1,850,303

ACCELERATOR FOR REFRIGERATION UNITS OF SODA FOUNTAINS Filed March 21,1929 s sneets sheet 3 gwvmtoz Frank/1'12 H 106,

Patented Mar. 1932 unrra'o STATES LIPATENTF OFFICE I rnAnnm nuivr', oromcAeo, rumors, Assxeuoa r rm; mourn cAaBomrc 'conronArIox, or enrcAeo,rumors, A conronA'rron or DELAWARE co'um'ron 1.0a ammeaaAsrIon Ums orso'nA rouNrAms Application ma larch arises. serial No. 34am.

In soda fountains of the mechanically refrigerated type'a' refrigeratingelement, commonly known as a 000 er or boiler is placed 'in awater-tight compartment together with l two coilsof pipe, one .of whichisconnected to in .a compartment submerges the boiler and.

v a su ply of carbonated water and the other of w ich is connected to asupply of uncarbonated water, the arrangement being such that a liquidsuch as water or brine contained the twoccoils.

Thewater tight compartment is arranged within a casing which isinsulated from the external air except as to its upper end, and

this end is covered by, a removable cover 'which, in some instances, isperforated at several oints for the reception of containers which ormcovers for-the perforations and receptacles for material to be kept0001', said i 29 containers projecting into the upper end of thecompartment generally above the normal liqilld level therein.

11 such an, arrangement the thermic circulation of the liquid issomewhat sluggish and there is a tendency towards accumulation of iceupon the boiler, which accumulation decreases the refrigerating efi'e'ctof the boiler.

The object of my present invention is to provide sim le but eflicientmeans for mechan'ically stimulating the circulation of the liquid aroundthe boiler and cooling coils in "such'manner as to decrease the tendencyto ice accumulation and thereby maintain, to a greater degree, thecooling efiiciency of the b01161. relative to the coils, theconstruction and arrangement of the mechanical circulation stimulatorbeing such as to prevent, as far as is conveniently"commerciallyracticable, the delivery to the refrigerate compartment of heat which isunavoidably dev vloped by the continuous o eration of the ing also suchstimulator, the arrangement that it will not detract, from the aestheticvenient operation.

value of the fountains, or interfere with con- The accompanying drawingsillustrate my invention.

Fig. 1 is a vertical section of that portion lator is carried, saidconstruction, as well as that shown in Fig. 3, being of :such characterassto be ap licable tosoda fountains already in use, w erein normalthermic circulation of the li uid within the receptacle. has beendepende upon and,

Fig. 5 is an elevation of the terminal block shown in Fig. 1.

In the drawings 10 indicates the main body of a soda fountain with heatinsulated walls of colnmon character, the top ofsaid main body beingcovered by a metal cover 11 which, together with'the heat-insulated top,is perforated at 12 above the receptacle 13 within which is mounted theboiler'14, the coil 15 for carbonated water, and the boiler 16 foruncarbonated water.

is a perspective View of another,

In the form shown in Figs. 1 and2 the re-- ceptacle 13, at one side, isprovided with a chimney-like lateral extension 17 which extendsdownwardly from the top of the receptacle to apoint well below thenormal liquid 'level which is to belmaintained in the re-- ceptacle, andat its lower end is y as indicated at 18. Above the open upper end ofthe chimney 17 the heat-insulated top of the main body 10-is perforatedat 20 to-receive a cylindrical shell 21 of .heat-iiisulatingandelectrical insulating material." The upper end of this shell 21 isprovided with an outwardlyprojecting flange 22 adapted to rest upon thecover plate 11, which is suitably perforated for the reception of theshell, and at its lower end is providedwith an inwardly projectingflange 23. v I

Mounted 'n the top of the main body,

alongside shell 20 is a terminal blockv25, of

electrical insulating material provided with I a pair of upwardlypresented terminal clips' 26 and 27.

Sleeved within shell 20 is a small electric motor 30 the axial length ofwhich is considerably lessthan the axiallength of'shell 20 and which, atits outer end, 'is provided with a metallic cap or cover 31 having an.

outwardly projected circumferential flange 32 adapted to rest uponflange22 of shell 20. The motor Alnit 3031 is held in place by metalscrews 33 passing throughflanges 32 and 22 and top plate 11 into nuts34. in contact with the under surface of cover 11 so that the body ofthe motor is grounded on the top plate 11. l

Motor 30 is provided with terminals 35- arcompartment 13 and, in theform shown in- Fig; 2, will support the propeller at about i the levelof the upper end of the'incline 18.

In the form shown in Fig. 4 shell 21 is supported in a metal c over 40adapted to close perforation 12, being so arranged that propeller 38will lie within the liquid in the compartment 13 at such point that thepro peller may freely rotate without contacting with the boiler oreither one of the water coils. The axial length of shell 21 is such 'as,to be less than the distance between the cover and the normal liquidlevel in compartment 13. v A

In the form shown for the perforation 12 isperforated at a plu= ralityof points 51, some of'which are clbsed by. receptacles 52 eachprovidedwith a cover 53, and one of which is closed by a cover 54,

l by which the motor unit iscarried, as clearly shown in' Fig. 3. I 'Intheforms shown in Figs. 3 and 4 an is provided for the reception of aportable plug 56 of ordinary form,

In each of'the forms shown the arrangement is such that-a forced'down-flow of liq-.

uid' incompartment 13ri1ay be set up alonga line somewhat removed fromthe boiler tubes, thus producing a f orced upward movement of the liquidadjacentjtheboi'ler tubes and a, consequent forced circulation of theliquid around the water, coils in such mannerthat the tendency oficeaccumulation upon the boiler tubes is retarded, thereby maintainin ahigher cooling efliciency of the boiler relati e to, the water coils.'Because of in Fig. 3the cover 50 and it may be given apleasing-contour, without sharpprojections, so that it will'notinterferewith the operations of the soda'disr .vpenser.

Iclaim as m invention: I 1. In a soda ountain, the combination with themain heat-insulated body. having a perkeptbright, so

forated metal cover plate and a perforated top, a li uid-containerarranged in said body below said rforations and a boiler of a mechanicalre rigerator and watercoils in said container, of a propeller arrangedin said container below the normal liquid level thereof, and a smallelectric motor having a vertical shaft carrying said pro eller, the bodyof said motor being grounde cover plate.

shaft projected below said normal liquidlevel, and a propeller carriedby the lower end of s'aidshaft.

3. In a soda fountain, the combination with the main heat insulated bodyhavingv a perforated metal cover plate and a perforated top, 'a liquidcontainer arranged in said body below said perforations, and a boiler ofap mechanical nefrigerator and water coils in electrlcal connector 55,leading to the motor,

said container, of a shell of heat-insulating material projecteddownwardly .t'oward the normal liquid-level in the container, a smallelectric motor vertically removably mounted i said s'helland having avertical shaft proje'cted below said normal liquid-level, the body ofsaid'motor being grounded on the metal cover plate, and a propellercarried by .the lower end of said-shaft. I

4". As an article of manufacture, a cover for the opening of a sodafountain which affordsaccess to the mechanically refrigeratedliquid-containing compartmentthereof, which cover carries a downwardlyprojectupon the metal.

2. In a soda fduntain, the combination with 9 I the metallic connectionbetween the motork. g Shell, and a Small electric m tor m unted body andthe extended metal cover plate of in said shell, said motor having themain body. of tha fountain, the heat .unshaft provlded at its lower endwith a propela" vertical submergejthe propeller in the liquid in the t 1compartment.

5; Inasoda fountain, the combination with the main heat-insulated bodyhaving a perforated to a liquid container arranged in the body elow saidperforation an having a chimney-like extension at one side,saidextension being provided with an inclined tension, and a. propellercarried by said shaft below the normal liquid level in said container.

In witness whereof I have hereunto setmy hand at Chicago, Illinois, this7th day of ,March, A. D. one thousand nine hundred and twenty-nine. rFRANKLIN HUNT.

bottom wall, and a boiler of a mechanical refrigerator and water coilsin said container, of a small electric motor arrangedin verticalalinement with the u perend of said chimney-like extension and aving avertical shaft extending downwardly into said extension, and apropeller-carried by said shaft below the normal liquid-level in saidcontainer and positioned to direct a stream against said inclined wall.t o

6. In a soda fountain, the combination with a the mainheat-insulatedbody having a per forated metal cover'plate and aperforated top, a liquid container arranged in the body below saidperforations and having a chimney like extension at one side, saidextension being rovided with-aninclined bottom wall,

and a oiler of a mechanical refrigerator and water coils in saidcontainer, of a small electric motor arranged in vertical alinement withthe u gar end of said chimney-like extension an aving a vertical shaftextending downwardly into said extension, and a pro-' I peller carriedby said shaft below the normal liquid-level in said container andositioned 3 to direct a stream against said inc 'nedwall. 7. In a sodafountain, the combination with the main heat-insulated body having-aperforated top, a liquid container'arran ed in the body below saidperforation. and aving a chinmey-like extension at one side, saidextension being provided with aninclined bottom wal'l, .and a boilerofamechanical refrigerator and water coils in said container, of a smallelectric motor arranged 'in vertical alinement with the upper end ofsaid chimney-like extension, a heat insulating shell shieldin the motorfrom said top, 'a vertical sha driven b said motor andextending-downwardly m said extension, and a propeller carried by saidshaft below the normal liquid level in said container.

8. In a soda fountain, the combination with the main heat-insulated bodyhavinga perforated .metal cover plate and a perforated top, a liquidcontainer arranged in the body below said perforations and having a,chimney like extension at one'side, said extension being-provided withan inclined bottom wall, and a boiler of a mechanical refrigerator and owatercoils in said'container,'of a small 'elec-. tric motor arranged inverticalalinementwith I the upper end of said chiin'ne -]ike extension,a heat insulating shell shie ding the motor from said top,-a verticalshaftdriven by said; motor and extending downwardly in said ex -j

